RLC-SVX09Q-EN
73
Table 31. Starter diagnostics (continued)
Diagnostic
Name
Affects Target Severity
Persistence
Active Modes
[Inactive
Modes]
Criteria
Reset
Level
Starter Contactor
Interrupt Failure -
xy
Chiller
Immediate and
Special Action
Latch
Starter Contactor
not Energized
[Starter
Contactor
Energized]
Detected compressor currents greater than 10% RLA on
any or all phases when the compressor was commanded
off. Detection time is 5 second minimum and 10 seconds
maximum. On detection and until the controller is manually
reset: generate diagnostic, energize the appropriate alarm
relay, continue to command the affected compressor off,
fully unload the effected compressor, and command a
normal stop to all other compressors. For as long as current
continues, keep both the Evap and Cond pumps in an
override-on mode, perform liquid level, oil return, and
condenser head pressure control on the circuit effected.
Local
Starter Did Not
Transition - xy
Cprsr
Immediate Latch
On the first
check after
transition
The Starter Module did not receive a transition complete
signal in the designated time from its command to
transition. The Must Hold time from the Starter Module
transition command is 1 second. The Must Trip time from
the transition command is 6 seconds. Actual design is 2.5
seconds. This diagnostic is active only for Y-Delta, Auto-
Transformer, Primary Reactor, and X-Line Starters.
Local
Starter Dry Run
Test - xy
Cprsr
Immediate Latch
Starter Dry Run
Mode
While in the Starter Dry Run Mode either 50 % Line Voltage
was sensed at the Potential Transformers or 10 % RLA
Current was sensed at the Current Transformers.
Local
Starter Failed to
Arm/Start - xy
Cprsr
Immediate Latch All
Starter failed to arm or start within the allotted time (15
seconds).
Local
Starter Fault
Type I - xy
Cprsr
Immediate Latch
Starting - Y Delta
Starters Only
This is a specific starter test where 1M(1K1) is closed first
and a check is made to confirm that there are no currents
detected by the CT's. If currents are detected when only 1M
is closed first at start, then one of the other contactors is
shorted.
Local
Starter Fault
Type II - xy
Cprsr
Immediate Latch
Starting - All
types of starters
a. This is a specific starter test where the Shorting
Contactor (1K3) is individually energized and a check is
made to confirm that there are no currents detected by the
CT's. If current is detected when only S is energized at
Start, then 1M is shorted. b. This test in a. above applies to
all forms of starters (Note: It is understood that many
starters do not connect to the Shorting Contactor.).
Local
Diagnostics
To Next Page
Loading...
